Bead for pneumatic or other tires.



M. W. FINK & A. M. KOBIOLKE.

BEAD FOR PNEUMATIC OR OTHER TIRES.

APPLICATION FILED FEB. 19. 1914.

Patented Oct. 26, 1915.

MARC WILMOT FINK, OF MIDDLE BRIGHTON, AND ADOLF MARTIN KOBIOLKE, 0F KEW.

' VICTORIA, AUSTRALIA.

Specification of Letters Patent.

BEAT) FOR PNEUMATIC OR OTHER TIRES.

Patented Uct. ac, 1a15.

Application filed February is, 1914.. SeriaLlNo. 819,766.

To all whom it may concern:

Be it known that we, MARC \VILMOT FINK and AnoLr MARTIN KoeioLKE,citizens of the Commonwealth of Australia, residing at Melros'e, St.-Kilda street, Middle Brighton, in the State of Victoria and saidCommonwealth, andv 18 Gordon avenue, Kew, State of Victoria, aforesaid,respectively, have invented an Improved Bead for Pneumatic or'otherTires, of which the following is a specification, reference being hadtherein to the accompanying drawing.

Hitherto the beads of motor and like tires have been formed with arubber or wire core and canvas lining, and not having the requiredstrength, are liable to break on any extra strain being imparted to thetire,

causing the same to part from the wheel and rendering the occupants ofthe vehicle liable to accident and injury.

This invention has been devised in order to provide a bead for pneumaticor other tires constructed in such a manner that strength will becombined with flexibility and the risk of accidents will be obviated.

According to this invention the beading is formed of a leather, rubberor other core with an outer cover or lining of leather, the shapecorresponding to the shape desired on the inner edges of the cover. Thecore and lining is impregnated with rubber before being placed in themold and vulcanized. The beading is formed of one-or more strips ofleather of suitable strength and thickness arranged so that the corewill pass approximately centrally around the inner ends of the tirecover.

In order that the invention may be more; readily understood, it will nowbe described with reference to the accompanying drawings, in whichFigure 1 is a sectional view in perspective of a pneumatic tire coverhaving beads constructed according to this invention embodied therein.Fig. 2 is a sectional view in perspective of a bead constructedaccording to this invention. Fig. 3 is an enlarged sectional view inperspective of the bead illustrated in Figs. 1 and-2' Fig. 4 is anenlarged sectional view in erspective, and Fig. 5 is an enlarged view incross section of a modified form of construction. Fig. 6 isan enlargedview in cross section of the beading illustrated in Figs. 1,2 and 3.

Like reference letters indicate the same or corresponding parts in allthe figures.

According to this invention, the heading is formed of a leather core a:This core is made up of a single strip of leather as illustrated or of aplurality of piecesjoined together. The core a is provided with an outercover or lining b of leather, both being impregnated with rubber beforebeing placed in the mold and vulcanized.

The beading may be formed with one or more strips of leather of suitablestrength and thickness arranged so that the core passes approximatelycentrally within the inner ends 0 of the tire cover (Z as abovedescribed.

The core a is lined or provided with a cover of leather of suitablethickness or strength which may be formed of two or more separate stripsof leather 0, f and when two strips of leather are employed, the outerstrip is of suflicient strength to overcome any stress that may beexerted against it, while the inner side of the leather cover or liningis of suitable flexibility.

In this construction, one side of the bead consists of the leather strip6 while the other sides consist .of a V or U shaped strip f, while thecore may consist of one or more leather strips a, the whole beingimpregnated with rubber, and is pressed into its required shape in themold during the vulcanizing operation. The bead a. so formed is built upas above described and the spaces between the core a and its leatherlining b are filled with rubber compound 9 and an outer surface, ofrubber h is also vulcanized to the bead.

Beads constructed as above described are attached to a tire or cover inany. suitable manner and they may beconstructed of varying strengths ifdesired.

In lieu of forming the leather cover or lining b of the core a in twopieces or strips,

it may be formed of one piece, the V or U,

tires of ordinary construction While at the same time it is strong andflexible and capable of withstanding any stress that is. likely to beimparted theretq'thus' tending to obviatethe risks of accidents that aresometimes caused through the faulty beads at'present in use. a

What We claim as our invention and desize to secure by Letters Patent,isl. A -molded and vulcanized tire bead made up of a rubber body, areinforcing leather strip embedded in the body and extendinglongitudinally throughou t the same, and a leather cover for the'body. I

2. A molded and vulcanized tire bead cluding tWo longitudinal strips,one of the stripsbeing substantially V-shaped in cross- .section.

Y In; testimony whereof We afiix our signatures in the presence of twoWitnesses.

MARC WILMOT FINK. v ADOLF MARTIN KOBIOLKE. Witnes'ses'z,

SIDNEY HENDLEY, ANINIE EDWARDS.

